Not sure what happened in August but 5 x weekly showing for rest of this month. Next July has 5 also but possibly a 6th as Saturdays show 'sold out'.
August 2016 is 6 x weekly, subject of course to further changes.
If you check FR Spanish news in the launch of MAD 16 they mention MAN as getting additional flights next summer, can't remember what it said but I think it was going to 1 daily or perhaps an extra weekly flight to take it to 6.